管理评论 ›› 2026, Vol. 38 ›› Issue (10): 12-22.

• 经济与金融管理 • 上一篇    

所得税税率下降为何促进了企业捐赠?——基于企业捐赠能力的实证研究

刘晔1, 苏才立1, 陆毅2   

  1. 1. 厦门大学经济学院, 厦门 361005;
    2. 清华大学经济管理学院, 北京 100084
  • 收稿日期:2024-12-31 发布日期:2026-11-14
  • 作者简介:刘晔,厦门大学经济学院教授,博士生导师,博士;苏才立,厦门大学经济学院博士研究生;陆毅(通讯作者),清华大学经济管理学院教授,博士生导师,博士。
  • 基金资助:
    国家社会科学基金重大项目(20&ZD079)。

Why does Lower Corporate Income Tax Rate Promote Corporate Donations?—An Empirical Study Based on Corporate Donation Capacity

Liu Ye1, Su Caili1, Lu Yi2   

  1. 1. School of Economics, Xiamen University, Xiamen 361005;
    2. School of Economics and Management, Tsinghua University, Beijing 100084
  • Received:2024-12-31 Published:2026-11-14

摘要: 在发挥好第三次分配作用、推动实现共同富裕的背景下,如何激励企业捐赠已成为广泛关注的问题。本研究借助2008年新颁布的《企业所得税法》作为准自然实验,通过观察企业适用的名义所得税税率变化,将企业划分为“税率不变”(对照组)与“税率下降”(实验组)两类,运用强度双重差分法实证研究了所得税税率降低对企业捐赠的影响。研究发现,所得税税率下降显著促进了企业捐赠。本文认为,降低所得税税率有助于增强现金流、提高净利润并缓解融资约束,从而使企业拥有更宽松的经济资源来增加捐赠,本结论在经过平行趋势检验及一系列稳健性检验后依然成立。异质性分析结果表明,从捐赠动机来看,所得税税率下降显著增加了企业的市场化捐赠,企业捐赠具有管理层自利动机、政治关联动机;从市场竞争的角度来看,所得税税率下降对市场化程度较低、行业垄断程度较低和媒体关注度较高的企业捐赠促进作用更为显著。根据实证结论,本文提出了相应的政策建议。

关键词: 所得税税率, 经济资源水平, 企业捐赠, 捐赠能力

Abstract: In the context of promoting common prosperity and tertiary distribution, how to incentivize corporate donations has become a matter of widespread concern. This study utilizes the newly enacted Corporate Income Tax Law of 2008 as a quasi-natural experiment. By observing changes in the nominal corporate income tax rates applicable to firms, we categorize companies into two groups: the “unchanged tax rate” group (control group) and the “decreased tax rate” group (treatment group). Employing the intensity difference-in-differences method, we empirically examine the impact of corporate income tax rate reductions on corporate donations. The findings reveal that lower corporate income tax rates significantly promote corporate donations. We argue that reducing corporate income tax rates helps enhance cash flow, increase net profits, and alleviate financing constraints, thereby enabling enterprises to possess more relaxed economic resources to increase donations. This conclusion remains robust after parallel trend tests and a series of robustness checks. Heterogeneity analysis shows that from the perspective of donation motivations, corporate income tax rate reductions significantly increase market-oriented donations by enterprises, with corporate donations exhibiting managerial self-interest motives and political connection motives. From the perspective of market competition, corporate income tax rate reductions have a more significant promoting effect on donations by enterprises with lower marketization levels, lower industry monopoly degrees, and higher media attention. Based on the empirical findings, this paper proposes corresponding policy recommendations.

Key words: corporate income tax rate, economic resource level, corporate donations, donation capacity